/*
 * Copyright � 2002-2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace Spring.Aop;

/// <summary>
/// Superinterface for advisors that perform one or more AOP
/// <b>introductions</b>.
/// </summary>
/// <remarks>
/// <p>
/// This interface cannot be implemented directly; subinterfaces must
/// provide the advice type implementing the introduction.
/// </p>
/// <p>
/// Introduction is the implementation of additional interfaces (not
/// implemented by a target) via AOP advice.
/// </p>
/// </remarks>
/// <seealso cref="Spring.Aop.IIntroductionInterceptor"/>
/// <author>Rod Johnson</author>
/// <author>Aleksandar Seovic (.NET)</author>
public interface IIntroductionAdvisor : IAdvisor
{
    /// <summary>
    /// Returns the filter determining which target classes this
    /// introduction should apply to.
    /// </summary>
    /// <remarks>
    /// <p>
    /// This is the <see cref="System.Type"/> part of a pointcut.
    /// Be advised that method matching doesn't make sense in the context
    /// of introductions.
    /// </p>
    /// </remarks>
    /// <value>
    /// The filter determining which target classes this introduction
    /// should apply to.
    /// </value>
    ITypeFilter TypeFilter { get; }

    /// <summary>
    /// Gets the interfaces introduced by this
    /// <see cref="Spring.Aop.IAdvisor"/>.
    /// </summary>
    /// <value>
    /// The interfaces introduced by this
    /// <see cref="Spring.Aop.IAdvisor"/>.
    /// </value>
    Type[] Interfaces { get; }

    /// <summary>
    /// Can the advised interfaces be implemented by the introduction
    /// advice?
    /// </summary>
    /// <remarks>
    /// <p>
    /// Invoked <b>before</b> adding an
    /// <seealso cref="Spring.Aop.IIntroductionAdvisor"/>.
    /// </p>
    /// </remarks>
    /// <exception cref="System.ArgumentException">
    /// If the advised interfaces cannot be implemented by the introduction
    /// advice.
    /// </exception>
    /// <seealso cref="Spring.Aop.IIntroductionAdvisor.Interfaces"/>
    void ValidateInterfaces();
}
